【作者】 王俊勃； 孙永奇； 井晓天；

【Author】 Wang Junbo Sun Yongqi Jing Xiaotian (Northwest Institute of Textile Science and Technology) (Xian University of Science and Technology)

【机构】 西北纺织工学院； 西安理工大学材料学院；

【摘要】 本文利用SEM原位研究在Ⅰ型动态加载下玻璃布增强PC复合材料层板的分层断裂过程及其微观机理。结果表明:分层损伤的裂纹扩展方向随织物平面曲折变化而改变,造成Ⅰ型加载裂纹的扩展是在正应力和剪应力的共同作用下进行的。分层损伤的微观过程包括微裂纹的萌生、长大、合并与贯通、主裂尖前扩四个阶段。更多还原

【Abstract】 This study is to investigate the dynamic processes of the interlaminar fracture and micromechanisms of the glass woven fabric reinforced polycarbonate composites through in-situ observation of specimen under mode I loading by SEM. Results show that the orientation of crack propagation of inter-laminar fracture varies with the woven structures and causes action of both normal stress and shear stress to microcrack propagation at mode I loaded. The microprocesses of interlaminar damage consists of micro-crack initiation, growth and coalescence, and main crack tip advance forward.更多还原